[#4026] In u-boot 08r1.5 and trunk, when SCLK is high, it can't boot up in BF533-STAMP

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[#4026] In u-boot 08r1.5 and trunk, when SCLK is high, it can't boot up in BF533-STAMP

Submitted By: Vivi Li

Open Date

2008-04-11 08:48:24     Close Date

2008-10-13 03:30:17

Priority:

Medium High     Assignee:

Mike Frysinger

Category:

N/A     Fixed In Release:

N/A

Found In Release:

N/A     Status:

Closed

Board:

N/A     Processor:

N/A

Silicon Revision:

    Resolution:

Rejected

Is the bug repeatable?:

N/A     

Summary: In u-boot 08r1.5 and trunk, when SCLK is high, it can't boot up in BF533-STAMP

Details:

 

In u-boot trunk, BF533-STAMP, set VCO_MULT to 45, CCLK_DIV to 1 and SCLK_DIV to 4, u-boot can't boot up.

It used to be ok in 08r1 with CCLK 497 MHz and SCLK 124 MHz.

 

Follow-ups

 

--- Vivi Li                                                  2008-06-27 01:05:28

In u-boot 08r1.5, u-boot can't boot up with CCLK 497 MHz and SCLK 124 MHz in

BF533-STAMP.

 

--- Mike Frysinger                                           2008-07-03 14:37:54

did you update the sdram timings as well ?  if not, you'll get random bit

failures because you arent refreshing sdram enough.

 

--- Mike Frysinger                                           2008-07-03 16:34:24

i talked to Robin ... the BF533-STAMP's cannot be run at SCLK greater than

100mhz as there is a large number of boards out there with a PCB defect in them

where you get memory failures at higher frequencies

 

 

 

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